I was in Walmart yesterday looking for some of the crushed walnut lizard or bird bedding that was talked about in an earlier thread. There was none to be found. However, I did find some rather large bags of corn cob media distined for critter bedding. I think they were about $3/bag. Since I use cob media right now I looked at it closely. The size of the media was larger than the stuff I have for tumbling but... it may work. Has anyone tried this stuff?